Alnus serrulata, commonly known as Smooth Alder, is a multi-stemmed native shrub or small tree typically found along streambanks, wetlands, and moist lowlands throughout the eastern United States. Growing 10 to 20 feet tall, it features smooth gray bark, finely toothed leaves, and distinctive cone-like seed structures that persist through winter. This nitrogen-fixing plant improves soil quality, stabilizes eroding banks, and provides habitat for birds, butterflies, and other wildlife. Smooth Alder is an essential species for riparian restoration and native planting projects.

Why choose Smooth Alder:

• Erosion control: Strong root system stabilizes banks and disturbed soils

• Wildlife habitat: Provides food and shelter for birds and pollinators

• Soil enrichment: Nitrogen-fixing roots improve soil fertility naturally

Cultivating tips:

• Sun exposure: Prefers full sun to part shade

• Soil needs: Thrives in moist to wet soils; ideal for rain gardens and stream edges

• Maintenance: Very low maintenance once established; tolerant of seasonal flooding

Designs for your garden:

• Rain gardens: Excellent for water management and stormwater filtration

• Riparian buffers: Natural choice for wetland and streambank restoration

• Wildlife gardens: Supports birds and beneficial insects with seasonal cover and food

Ecological benefits:

• Native value: Supports native pollinators and wildlife species

• Ecosystem function: Filters water, prevents erosion, and enhances soil

• Restoration ready: Ideal for ecological planting and conservation projects